Apparatus for producing pyro-acetic spirit.



APPARATUS FOR NO MODEL.

PATENTED SEPT. 6, 1904. A. IPPENDORF. PRODUCING PYRO-AGETIO SPIRIT.

APPLICATION FILED. JULY 1, 1902.

Kiw

UNITED STATES Patented September 6, 1904.

PATENT OFFICE.

ALOIS IPPENDORF, OF DUSSELDOFF, GERMANY.

APPARATUS'FQR PRODUCING PYRO-ACETlC SPIRIT.

SPECIFICATION forming part of Letters Patent N0. 769,164, dated September 6, 1904.

' Applieation filed July 1, 1902. Serial No. 113,950. (No model.) i I To all whom it may concern: I

Be it known that I, ALoIs IPPENDORE, acitizen of Germany, residing as Dusseldorf, Germany, have inven ted new and useful Improvements in Apparatus for the Production of Pyro-Acetic Spirit, of which the following is a specification.

My invention relates to an apparatus for the production of pyro-acetic spirit from sawdust.

The apparatus consists of two separate compartments, the first of which serves. to preheat the wood, while in'the second the pyroacetic spirit and residual products are produced and led to the condenser.

In the accompanying drawings, Figure 1 is a side view of my improved apparatus, partly in section; Fig. 2, a longitudinal section on line A B, Fig. 4; Fig. 3, a plan; Fig. 4, a front view, partly broken away; and Fig. 5, a

section through the upper part of the econo:

mizer. y

Theletter a represents a cylindrical vessel or economizer having a frusto conical enda' and supported by the framework of the apparatus in suitable manner. The vessel a is chargedv through funnel g and is perforated at its upper side, as atv a, the perforated sec tion being surrounded bya cover 0, shown to be made integral with the vessel a, and from which a-tube 10 leads to the chimney q. The tube 19 carries the steam and a portion of the volatile gases evolved from the heated sawdust ina vessel (0 to the chimney.

'Within the vessel a is adapted to rotate in suitable bearings a shaft Z1, driven by pulley b. That section of shaft 6, which is inclosed by the cylindrical portion of vessel (0, carries a number of inclined blades or wings'c, while that section of the shaft which is contained within the conical portion a of the vessel a carries a conveyer or worm d. Both the wings,

as well as the worm, extend close to the inner face of the receptacle. 6 will thus rotate the shaft Z), together with its stirrers' c, andjwormYZ.

The vessel 0 is connected by channels 'Hs Z to theinterior of a rotatable drum or retort open at both ends and inclosed by frame A. Within the channel 70 are mounted two feedwheels m, driven by bevel-gears m from shaft 'part of an oven.

The rotation of pulley 6. The channel Z contains a shovel-wheel m driven in manner hereinafter described.

Within the'retort e is adapted to rotate in a direction opposite to the motion of the drum a shaft f,- carrying a suitable number of inclined spaced wings or blades 1. These blades are mounted upon the shaft f from end to end,

'so that they extend along the entire length of the retort and effect a uniform feed of the sawdust. Both the drum 0 and shaft f receive motion from power-shaft y, mounted in suitable bearings and driven .by pulley 3 The shaft y carries a toothed wheel that inter-' 'Shaft f carries a toothed wheel f, that receives motion from toothed wheel 00 by transmission-wheel f A tube 25 connects the interior of retort c with a worm a, that leadsto the condenser o. The retort e and the lower part of vessel a are inclosed by the framework A, forming The framework A has a discharge-opening opposite the outlet end of the retort. This opening is adapted to be closed by a pivoted door 8, heldnormally in its closed position by a counterweight .9;

By mounting a number of spaced wings 1*- upon shaft f, from end to end of the retort, the gases rising, from the sawdust may pass freely and quickly between 'the wings to outlet-tube t. In this way the gases are not apt to become decomposed, as would be the case ifthey were retained within the retort for an undue length of time. gases rising from gate 71 flow around retort a and vessel a and escape through the chimney q. A pipe w, having'strainers 11), connects the condenser with the fireplace of the oven.

The operation is as follows: The sawdust, filled into funnel 9, drops into vessel a and is thoroughly worked through and fed forward by Wings 0 and conveyer cl. Along its course the sawdust-is preheated to any desired degree. The steam and gases generated in vessel ca escape through pipe 32 into chimney q. The sawdust then enters channel 2' and is fed The heatingthrough channels 70 and Z by feed-Wheels m m to retort e. Within the retort the sawdust is again thoroughly Worked through and is fed along the retort and out of the open door 8 by the blades 0. During its passage through the retort the sawdust is heated to the degree necessary for distillation. The residuum coal is removed through door 8, While the gases escape through pipe t into worm u and are condensed Within the condenser o. In the condenser the pyroligneous acid, tar, and pyroacetic spirit remain While the gases are conducted to the fireplace through pipe w.

What I claim is* In an apparatus for producing pyro-acetic acid, a cylindrical vessel having a frusto-conical end, rotatable Wings within the cylindrical section of the vessel, a rotatable worm within the coniforni section of the vessel, means for heating the vessel, a rotatable retort communicating With the vessel, a rotatable shaft within the retort, and inclined blades mounted upon the shaft, substantially as specified.

Signed by me at Dusseldorf, Germany, this 3d day of May, 1902.

ALOIS IPPIENDO'RF.

Witnesses:

WILLIAM ESSENWEIN, PETER LIEBER. 

